1 // This file is Copyright its original authors, visible in version control
4 // This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
5 // or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
7 // You may not use this file except in accordance with one or both of these
10 //! Onion message testing and test utilities live here.
12 use crate::blinded_path::BlindedPath;
13 use crate::sign::{NodeSigner, Recipient};
14 use crate::ln::features::InitFeatures;
15 use crate::ln::msgs::{self, DecodeError, OnionMessageHandler};
16 use super::{CustomOnionMessageContents, CustomOnionMessageHandler, Destination, OffersMessage, OffersMessageHandler, OnionMessageContents, OnionMessenger, SendError};
17 use crate::util::ser::{Writeable, Writer};
18 use crate::util::test_utils;
20 use bitcoin::network::constants::Network;
21 use bitcoin::secp256k1::{PublicKey, Secp256k1};
23 use core::sync::atomic::{AtomicU16, Ordering};
25 use crate::io_extras::read_to_end;
28 struct MessengerNode {
29 keys_manager: Arc<test_utils::TestKeysInterface>,
30 messenger: OnionMessenger<Arc<test_utils::TestKeysInterface>, Arc<test_utils::TestKeysInterface>, Arc<test_utils::TestLogger>, Arc<TestOffersMessageHandler>, Arc<TestCustomMessageHandler>>,
31 custom_message_handler: Arc<TestCustomMessageHandler>,
32 logger: Arc<test_utils::TestLogger>,
36 fn get_node_pk(&self) -> PublicKey {
37 self.keys_manager.get_node_id(Recipient::Node).unwrap()
41 struct TestOffersMessageHandler {}
43 impl OffersMessageHandler for TestOffersMessageHandler {
44 fn handle_message(&self, _message: OffersMessage) {
50 struct TestCustomMessage {}
52 const CUSTOM_MESSAGE_TYPE: u64 = 4242;
53 const CUSTOM_MESSAGE_CONTENTS: [u8; 32] = [42; 32];
55 impl CustomOnionMessageContents for TestCustomMessage {
56 fn tlv_type(&self) -> u64 {
61 impl Writeable for TestCustomMessage {
62 fn write<W: Writer>(&self, w: &mut W) -> Result<(), io::Error> {
63 Ok(CUSTOM_MESSAGE_CONTENTS.write(w)?)
67 struct TestCustomMessageHandler {
68 num_messages_expected: AtomicU16,
71 impl TestCustomMessageHandler {
73 Self { num_messages_expected: AtomicU16::new(0) }
77 impl Drop for TestCustomMessageHandler {
79 #[cfg(feature = "std")] {
80 if std::thread::panicking() {
84 assert_eq!(self.num_messages_expected.load(Ordering::SeqCst), 0);
88 impl CustomOnionMessageHandler for TestCustomMessageHandler {
89 type CustomMessage = TestCustomMessage;
90 fn handle_custom_message(&self, _msg: Self::CustomMessage) {
91 self.num_messages_expected.fetch_sub(1, Ordering::SeqCst);
93 fn read_custom_message<R: io::Read>(&self, message_type: u64, buffer: &mut R) -> Result<Option<Self::CustomMessage>, DecodeError> where Self: Sized {
94 if message_type == CUSTOM_MESSAGE_TYPE {
95 let buf = read_to_end(buffer)?;
96 assert_eq!(buf, CUSTOM_MESSAGE_CONTENTS);
97 return Ok(Some(TestCustomMessage {}))
103 fn create_nodes(num_messengers: u8) -> Vec<MessengerNode> {
104 let mut nodes = Vec::new();
105 for i in 0..num_messengers {
106 let logger = Arc::new(test_utils::TestLogger::with_id(format!("node {}", i)));
107 let seed = [i as u8; 32];
108 let keys_manager = Arc::new(test_utils::TestKeysInterface::new(&seed, Network::Testnet));
109 let offers_message_handler = Arc::new(TestOffersMessageHandler {});
110 let custom_message_handler = Arc::new(TestCustomMessageHandler::new());
111 nodes.push(MessengerNode {
112 keys_manager: keys_manager.clone(),
113 messenger: OnionMessenger::new(keys_manager.clone(), keys_manager, logger.clone(), offers_message_handler, custom_message_handler.clone()),
114 custom_message_handler,
118 for idx in 0..num_messengers - 1 {
119 let i = idx as usize;
120 let mut features = InitFeatures::empty();
121 features.set_onion_messages_optional();
122 let init_msg = msgs::Init { features, networks: None, remote_network_address: None };
123 nodes[i].messenger.peer_connected(&nodes[i + 1].get_node_pk(), &init_msg.clone(), true).unwrap();
124 nodes[i + 1].messenger.peer_connected(&nodes[i].get_node_pk(), &init_msg.clone(), false).unwrap();
129 fn pass_along_path(path: &Vec<MessengerNode>) {
130 path[path.len() - 1].custom_message_handler.num_messages_expected.fetch_add(1, Ordering::SeqCst);
131 let mut prev_node = &path[0];
132 for node in path.into_iter().skip(1) {
133 let events = prev_node.messenger.release_pending_msgs();
135 let msgs = events.get(&node.get_node_pk()).unwrap();
136 assert_eq!(msgs.len(), 1);
139 node.messenger.handle_onion_message(&prev_node.get_node_pk(), &onion_msg);
146 let nodes = create_nodes(2);
147 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
149 nodes[0].messenger.send_onion_message(&[], Destination::Node(nodes[1].get_node_pk()), test_msg, None).unwrap();
150 pass_along_path(&nodes);
154 fn two_unblinded_hops() {
155 let nodes = create_nodes(3);
156 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
158 nodes[0].messenger.send_onion_message(&[nodes[1].get_node_pk()], Destination::Node(nodes[2].get_node_pk()), test_msg, None).unwrap();
159 pass_along_path(&nodes);
163 fn two_unblinded_two_blinded() {
164 let nodes = create_nodes(5);
165 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
167 let secp_ctx = Secp256k1::new();
168 let blinded_path = BlindedPath::new_for_message(&[nodes[3].get_node_pk(), nodes[4].get_node_pk()], &*nodes[4].keys_manager, &secp_ctx).unwrap();
170 nodes[0].messenger.send_onion_message(&[nodes[1].get_node_pk(), nodes[2].get_node_pk()], Destination::BlindedPath(blinded_path), test_msg, None).unwrap();
171 pass_along_path(&nodes);
175 fn three_blinded_hops() {
176 let nodes = create_nodes(4);
177 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
179 let secp_ctx = Secp256k1::new();
180 let blinded_path = BlindedPath::new_for_message(&[nodes[1].get_node_pk(), nodes[2].get_node_pk(), nodes[3].get_node_pk()], &*nodes[3].keys_manager, &secp_ctx).unwrap();
182 nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), test_msg, None).unwrap();
183 pass_along_path(&nodes);
187 fn too_big_packet_error() {
188 // Make sure we error as expected if a packet is too big to send.
189 let nodes = create_nodes(2);
190 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
192 let hop_node_id = nodes[1].get_node_pk();
193 let hops = [hop_node_id; 400];
194 let err = nodes[0].messenger.send_onion_message(&hops, Destination::Node(hop_node_id), test_msg, None).unwrap_err();
195 assert_eq!(err, SendError::TooBigPacket);
199 fn we_are_intro_node() {
200 // If we are sending straight to a blinded path and we are the introduction node, we need to
201 // advance the blinded path by 1 hop so the second hop is the new introduction node.
202 let mut nodes = create_nodes(3);
203 let test_msg = TestCustomMessage {};
205 let secp_ctx = Secp256k1::new();
206 let blinded_path = BlindedPath::new_for_message(&[nodes[0].get_node_pk(), nodes[1].get_node_pk(), nodes[2].get_node_pk()], &*nodes[2].keys_manager, &secp_ctx).unwrap();
208 nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg.clone()), None).unwrap();
209 pass_along_path(&nodes);
211 // Try with a two-hop blinded path where we are the introduction node.
212 let blinded_path = BlindedPath::new_for_message(&[nodes[0].get_node_pk(), nodes[1].get_node_pk()], &*nodes[1].keys_manager, &secp_ctx).unwrap();
213 nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg), None).unwrap();
215 pass_along_path(&nodes);
219 fn invalid_blinded_path_error() {
220 // Make sure we error as expected if a provided blinded path has 0 or 1 hops.
221 let nodes = create_nodes(3);
222 let test_msg = TestCustomMessage {};
225 let secp_ctx = Secp256k1::new();
226 let mut blinded_path = BlindedPath::new_for_message(&[nodes[1].get_node_pk(), nodes[2].get_node_pk()], &*nodes[2].keys_manager, &secp_ctx).unwrap();
227 blinded_path.blinded_hops.clear();
228 let err = nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg.clone()), None).unwrap_err();
229 assert_eq!(err, SendError::TooFewBlindedHops);
232 let mut blinded_path = BlindedPath::new_for_message(&[nodes[1].get_node_pk(), nodes[2].get_node_pk()], &*nodes[2].keys_manager, &secp_ctx).unwrap();
233 blinded_path.blinded_hops.remove(0);
234 assert_eq!(blinded_path.blinded_hops.len(), 1);
235 let err = nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg), None).unwrap_err();
236 assert_eq!(err, SendError::TooFewBlindedHops);
241 let nodes = create_nodes(4);
242 let test_msg = TestCustomMessage {};
243 let secp_ctx = Secp256k1::new();
246 let reply_path = BlindedPath::new_for_message(&[nodes[2].get_node_pk(), nodes[1].get_node_pk(), nodes[0].get_node_pk()], &*nodes[0].keys_manager, &secp_ctx).unwrap();
247 nodes[0].messenger.send_onion_message(&[nodes[1].get_node_pk(), nodes[2].get_node_pk()], Destination::Node(nodes[3].get_node_pk()), OnionMessageContents::Custom(test_msg.clone()), Some(reply_path)).unwrap();
248 pass_along_path(&nodes);
249 // Make sure the last node successfully decoded the reply path.
250 nodes[3].logger.assert_log_contains(
251 "lightning::onion_message::messenger",
252 &format!("Received an onion message with path_id None and a reply_path"), 1);
254 // Destination::BlindedPath
255 let blinded_path = BlindedPath::new_for_message(&[nodes[1].get_node_pk(), nodes[2].get_node_pk(), nodes[3].get_node_pk()], &*nodes[3].keys_manager, &secp_ctx).unwrap();
256 let reply_path = BlindedPath::new_for_message(&[nodes[2].get_node_pk(), nodes[1].get_node_pk(), nodes[0].get_node_pk()], &*nodes[0].keys_manager, &secp_ctx).unwrap();
258 nodes[0].messenger.send_onion_message(&[], Destination::BlindedPath(blinded_path), OnionMessageContents::Custom(test_msg), Some(reply_path)).unwrap();
259 pass_along_path(&nodes);
260 nodes[3].logger.assert_log_contains(
261 "lightning::onion_message::messenger",
262 &format!("Received an onion message with path_id None and a reply_path"), 2);
266 fn invalid_custom_message_type() {
267 let nodes = create_nodes(2);
269 struct InvalidCustomMessage{}
270 impl CustomOnionMessageContents for InvalidCustomMessage {
271 fn tlv_type(&self) -> u64 {
272 // Onion message contents must have a TLV >= 64.
277 impl Writeable for InvalidCustomMessage {
278 fn write<W: Writer>(&self, _w: &mut W) -> Result<(), io::Error> { unreachable!() }
281 let test_msg = OnionMessageContents::Custom(InvalidCustomMessage {});
282 let err = nodes[0].messenger.send_onion_message(&[], Destination::Node(nodes[1].get_node_pk()), test_msg, None).unwrap_err();
283 assert_eq!(err, SendError::InvalidMessage);
287 fn peer_buffer_full() {
288 let nodes = create_nodes(2);
289 let test_msg = TestCustomMessage {};
290 for _ in 0..188 { // Based on MAX_PER_PEER_BUFFER_SIZE in OnionMessenger
291 nodes[0].messenger.send_onion_message(&[], Destination::Node(nodes[1].get_node_pk()), OnionMessageContents::Custom(test_msg.clone()), None).unwrap();
293 let err = nodes[0].messenger.send_onion_message(&[], Destination::Node(nodes[1].get_node_pk()), OnionMessageContents::Custom(test_msg), None).unwrap_err();
294 assert_eq!(err, SendError::BufferFull);
299 // Check we can send over a route with many hops. This will exercise our logic for onion messages
300 // of size [`crate::onion_message::packet::BIG_PACKET_HOP_DATA_LEN`].
301 let num_nodes: usize = 25;
302 let nodes = create_nodes(num_nodes as u8);
303 let test_msg = OnionMessageContents::Custom(TestCustomMessage {});
305 let mut intermediates = vec![];
306 for i in 1..(num_nodes-1) {
307 intermediates.push(nodes[i].get_node_pk());
310 nodes[0].messenger.send_onion_message(&intermediates, Destination::Node(nodes[num_nodes-1].get_node_pk()), test_msg, None).unwrap();
311 pass_along_path(&nodes);